Question

The following businesses are considering location in your community: a) A pizza delivery service, b) A sporting goods store, c) A small brewery, and d) A plant making aluminum cans. Describe the positive and negative location factors for each of these businesses.

Explain what the following sequencing rules are, and when they should be used, using relevant firm/industry examples to illustrate. (a) SPT; (b) Johnson's Rule; (c) FCFS/FIFO (d) CUSTPR. Identify two KPI’s a firm can use to compare sequencing.

Answer 1

a) A pizza delivery service:

positive: The main advantage in housing area is they reside many families chances of buying pizza are more and sales may increase.

There are also many schools and colleges in this community so there are high chances that students buy them regularly and chances of making deals for a bulk order.

Negative: Competition with other pizza delivery services and another negative is one can opt pickup because of the extra charges for ordering pizza.

b) A sporting goods store:

Positive: Open to this community help sports people or children to buy the necessary items from this store, one can try sports apparels by trying them rather than buying from an online store.

Negative: Competition with an already established store in this area and one of the main negative is that sporting store gets less revenue compared to others because outdoor games are only confined to some seasons.

c)A small Brewery:

Positive: Will be able to purchase beer nearby home and no intermediate cost as it is directly purchased and waiting time is less compared to online, directly buy whenever needed.

Negative: This shop confined only to adults and competition with other small grocery stores who are already selling this.

d) A plant making aluminum cans:

Positive: Creating Jobs for needy and people residing nearby

Negative: Polluting near residential area lead to diseases.

Explain what the following sequencing rules are, and when they should be used, using relevant firm/industry examples to illustrate. (a) SPT; (b) Johnson's Rule; (c) FCFS/FIFO (d) CUSTPR. Identify two KPI’s a firm can use to compare sequencing

a) SPT (short processing time): It is a single machining rule of sequencing it is an order of carrying out activities, it minimizes the total flow time. Whenever a machine is freed, the shortest job ready at the time will begin processing, ready time for 0 at all time it is used in minimizing the mean number of jobs in the system, minimizing the mean waiting time of the jobs from the time of arrival to the start of processing, minimizing the maximum waiting time and the mean lateness.

(b) Johnson's Rule :

  Johnson's Algorithm minimizes the makespan in a flow shop with two machines, given already times equal to zero and non-preemption.  In a flow shop with two machines, the optimal schedule has the same ordering of jobs on each machine.

C)FCFS: First come first serve the process which arrives first always execute first, the first arriving has the first priority ex: In a workstation, an order for 2 cars by different persons ordered with 1 hr gap the first ordered car by 1st person gets the 1st priority and then next gets it.

D) CUSTER: (highest customer priority) Operators may also look through a stack of jobs to find a similar to the job that is currently being processed that would minimize the downtime of the machine and make the operator's job easier.